package com.hmdp.service.impl;

import cn.hutool.json.JSONArray;
import cn.hutool.json.JSONUtil;
import com.hmdp.dto.Result;
import com.hmdp.entity.ShopType;
import com.hmdp.mapper.ShopTypeMapper;
import com.hmdp.service.IShopTypeService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.CollectionUtils;
import org.springframework.util.StringUtils;

import javax.annotation.Resource;
import java.util.List;
import java.util.Map;

/**
 * <p>
 *  服务实现类
 * </p>
 *
 * @author 虎哥
 * @since 2021-12-22
 */
@Service
public class ShopTypeServiceImpl extends ServiceImpl<ShopTypeMapper, ShopType> implements IShopTypeService {

    @Resource
    private StringRedisTemplate stringRedisTemplate;

    @Override
    public Result queryTypeList() {
        //查询redis中是否存在
        String data = stringRedisTemplate.opsForValue().get("shopType:list");
        if(StringUtils.isEmpty(data)){
            List<ShopType> shopTypeList = query().orderByAsc("sort").list();
            if(CollectionUtils.isEmpty(shopTypeList)){
                return Result.fail("列表不存在，请添加数据！");
            }
            stringRedisTemplate.opsForValue().set("shopType:list", JSONUtil.toJsonStr(shopTypeList));
            return Result.ok(shopTypeList);
        }
        return Result.ok(JSONUtil.toList(data,ShopType.class));
    }
}
